<%--
  Created by IntelliJ IDEA.
  User: dailyblue
  Date: 2025/7/19
  Time: 10:51
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<%
    application.setAttribute("A", "222");
    application.setAttribute("B", 78.9);
    application.setAttribute("C", "hello");
    application.setAttribute("A", "李四");
    application.setAttribute("D", 87);

    application.removeAttribute("B");
%>

</body>
</html>
